The Collaborative International Dictionary of English v.0.48:

Embar \Em*bar"\, v. t. [imp. & p. p. Embarred; p. pr. & vb. n.
   Embanking.] [Pref. em- + bar: cf. F. embarrer. Cf.
   Embargo.]
   1. To bar or shut in; to inclose securely, as with bars.
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            Where fast embarred in mighty brazen wall.
                                                  --Spenser.
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   2. To stop; to hinder by prohibition; to block up.
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            He embarred all further trade.        --Bacon.
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